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地球引力位函数在流处理器上的实现与分析
流处理器是新型高性能微处理器的代表之一。该文通过分析Imagine 流处理器体系结构，实现某卫星轨道预报系统核心子程序CBPTRB，对基于Imagine 的钟精确模拟器ISim 进行性能测试，并将结果与该程序在普通x86 处理器上的性能进行对比，同时根据实验结果提出改进方法。关键词：Imagine 流处理器；流编程模型；CBPTRB 程序；性能评估Implementation and Analysis of GravitationalPotential Function on Stream ProcessorsCAO Wei, CHE Yong-gang, WANG Zheng-hua(State Key Lab of Parallel and Distributed Processing, School of Computer, National University of Defense Technology, Changsha 410073)【Abstract】The stream processor is one of the representative for high performance processors. On the basis of analyzing the structure of Imaginestream processor, this paper implements the kernel procedure of a satellite orbit predicting system called CBPTRB. The performance of thecycle-accurate simulator based on ISim is tested, and the results of which is compared with the one getting from general x86 processor. According tothe experimental results, the improved method is introduced.【Key words】Imagine stream processor; stream programming model; CBPTRB program; performance evaluation
